Standards

Meeting regulations in any industry, standards are essential for periodically checking the accuracy of equipment pieces. By comparing against the known values, output readings detect errors present and inform personnel adjustments are required. Once the settings of the manual or automatic instruments have returned to zero, the reestablished conditions will yield optimal working performance. Calibrating with concentrated standards eliminates the possibility that environmental changes will induce instrumental miscalculation when accuracy matters most.

524 Results

Sort by

VWR® ARISTAR®, Lithium Standard Solution, 10000 mg/L Li in dil. Nitric Acid (from Li₂CO₃), Standard for ICP

Supplier: VWR Chemicals

Li₂CO₃ in HNO₃ 2 to 5%.

Expand 2 Items

VWR®, Colour standard solutions ASTM

Supplier: VWR Chemicals

Ready to use colour solutions that are prepared gravimetrically on a weight/weight basis.

Expand 7 Items

VWR® ARISTAR®, Terbium Standard Solution, 1000 mg/L Tb in dil. Nitric Acid (from Tb₄O₇), Standard for ICP

Supplier: VWR Chemicals

Tb₄O₇ in HNO₃ 2 to 5%.

Expand 2 Items

VWR® ARISTAR®, Hafnium Standard Solution, 1000 mg/L Hf in Dilute Nitric Acid with hydrofluoric Acid (max. 1%) (from HfO2), Standard for ICP

VWR® ARISTAR®, Hafnium Standard Solution, 1000 mg/L Hf in Dilute Nitric Acid with hydrofluoric Acid (max. 1%) (from HfO₂), Standard for ICP

Supplier: VWR Chemicals

HfO₂ in HNO₃ (2 to 5%) with traces HF.

Expand 2 Items

VWR® Traceable® One-Shot™, Conductivity standards (CRM)

Supplier: VWR Collection

Traceable® Conductivity Standards are among the most accurate available. They are compatible with all makes of equipment, and can be used in lab or field. Each bottle is labeled for calibrating conductivity (microsiemens/micromhos), resistivity (ohms), and dissolved solids (parts per million).

Expand 5 Items

VWR®, Cloud Point standard, Certified Reference Material

Supplier: VWR Chemicals

Cloud Point Certified Reference Materials are for the verification of laboratory instruments used in testing petroleum and derivative products for Cloud Point according to IP 219, ISO 3015, EN 23015, ASTM D2500 and other equivalent test methodology.

Expand 1 Items

VWR®, Certified Reference Materials for the standardisation of volumetric solutions

Supplier: VWR Chemicals

CRM's - secondary reference materials intended for standardisation of volumetric solutions in accordance with the Pharmacopoeia (Ph. Eur. and USP). These volumetric standards are prepared from high purity salts. Certified mass fraction is determined by classical analysis according to ISO/IEC 17025. Homogeneity and stability studies have been performed according to the requirements of ISO 17034 and ISO Guide 35. All volumetric standards are traceable to SI (NIST or BAM).

Expand 11 Items

VWR®, Standard solution (1000 ppm Ca) for the preparation of calcium standard solution (100 ppm Ca), alcoholic Reag. Ph. Eur., 5000802

Supplier: VWR Chemicals

Calcium Standard, 1000 mg/L, VWR®, Calcium

Expand 1 Items

VWR®, UV/Visible standards

Supplier: VWR Chemicals

For spectrophotometer calibration according to European Pharmacopoeia (Ph. Eur.)

Expand 7 Items

VWR® ARISTAR®, Multi-Element Quality Control Standard, 100 mg/L for 32 Elements in 5% Nitric Acid, for ICP

Supplier: VWR Chemicals

Multi-Element Standard, Multi-element quality control standard 100 mg/L {Ag; Al; Ba; Bi; Ca; Cd; Co; Cr; Cu; Fe; Ga; Ge; In; K; Li; Mg; Mn; Mo; Na; Nb; Ni; P; Pb; Re; Sb; Si; Sn; Ta; Ti; V; W; Zn} in nitric acid 5% ARISTAR® for ICP, VWR® ARISTAR®, Application: ICP standards